Since early April, a numbered Gömböc piece is on display in the collection of France's foremost mathematical center. In the library of the Institut Henri Poincaré Gömböc 1928 is at a central display, commemomrating the Institute's year of foundation. Most models in the world-famous collection were manufactured in the twenties of the last century and surrealist artist Man Ray created a series of photographs about the models in 1936.